Re: [PATCH] powerpc/entry: Clear TIF_SYSCALL_RET before syscall error return
From: Madhavan Srinivasan <maddy@linux.ibm.com>
Date: 2026-09-09 06:19:07
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On Fri, 28 Aug 2026 11:08:11 +0530, Shrikanth Hegde wrote:
Shivaprasad reported a boot failure due to userspace processes crash on
abort() from libc.so.6. It was bisected to merge request
commit '3424d8c18a7d ("Merge tag 'core-entry-2026-08-17' of
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")'
Upon checking the merge, when syscall_enter_from_user_mode_randomize_stack
fails, which could happen when a tracer like seccomp or ptrace intercepts
and skips the syscall, the code returns to userspace immediately without
clearing the intermediate flag which was set.
[...]
Applied to powerpc/fixes.
[1/1] powerpc/entry: Clear TIF_SYSCALL_RET before syscall error return
https://git.kernel.org/powerpc/c/2c1dde8a69a3a7d64425a6de0add6e289a5a402f
cheers